diff --git a/.github/workflows/build-and-test-multiplatform.yml b/.github/workflows/build-and-test-multiplatform.yml
index cfa28c7bdd..51acbd0601 100644
--- a/.github/workflows/build-and-test-multiplatform.yml
+++ b/.github/workflows/build-and-test-multiplatform.yml
@@ -15,7 +15,7 @@ on:
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number }}
-  cancel-in-progress: true
+  cancel-in-progress: ${{ !(github.ref == 'refs/heads/IR' && github.repository == 'Open-Cascade-SAS/OCCT') }}
 
 jobs:
   clang-format: